The Turtle Back is an accessory which can be added to either the Deluxe Troutpack or the Trout Trekker and serves as a small backpack to store larger items for your day in the field. Durable Cordura® construction. Roomy design features a main storage compartment and exterior zippered mesh pocket. "No sweat" mesh back liner also functions as a storage pouch. Colors: Forest green, navy, or sand. 11"h x 10"w x 3"d (28cm x 25cm x 8cm) Model# JWO4250